John P. Lapotaire

Expert Witness

Certification(s)  
Valid until 4/30/2026
Areas of Expertise
Mr. Lapotaire has performed investigations, and forensic diagnostic inspections throughout the mid-West and Eastern United States for both commercial and residential properties. He has served as an expert witness in court cases involving indoor air quality, mold, building envelope failure, building product failure and spray polyurethane foam insulation. He has provided consultation and or testimony in several hundred litigation cases.

He has served on many industry committees through appointment or election by his peers. They include:
Past President, Indoor Air Quality Association (IAQA)

American Society of Heating, Refrigerating and Air Conditioning Engineers, ASHRAE
  • Standard Guideline for Initial Residential Mold Assessment
  • Standard Guide for The Inspection of an Educational Facility for Moisture Intrusion and Mold Growth

  • American Society for Testing and Materials International, ASTM
  • Voting member of the ASTM International Technical Committee D22 on Air Quality
  • ASTM Committee D733814 Standard Guide for Assessment of Fungal Growth in Buildings
  • ASTM Committee D729706 Standard Practice for Evaluating Residential Indoor Air Quality Concerns
  • ASTM Committee WK32489 - Standard Developing and Performing a Sampling Strategy to Collect Meaningful Data during the Assessment of Fungal Growth in Buildings
  • ASTM Committee WK35039 - Standard for Post Remediation Verification of Fungal Contamination in Buildings


  • Indoor Environmental Standards Organization, IESO
  • IESO 2210 for Initial Residential Mold Assessment
  • IESO 3210 Standard Guide for the Inspection of an Educational Facility for Moisture Intrusion & Mold Growth


  • Institute of Inspection, Cleaning and Restoration Certification, IICRC
  • Government Relations Committee
  • S-520 Standard Review Committee
  • Technical Advisory Committee (TAC) on Indoor Air Quality


  • Restoration Industry Association, RIA
  • Education Committee


  • American Council for Accredited Certification, ACAC
  • Past Certification Board member


  • Mr. Lapotaire has presented to many professional organizations on subjects that include Mold Assessment, Spray Polyurethane Foam Insulation, Building Envelope Investigations, Indoor Environmental Assessments, Green Building and IAQ, IAQ, and VOC's in New Construction.
    Field Experience 25 years
    Company Indoor Air Quality Solutions, IAQS
    Company Address 5224 W SR 46 Suite 380, Sanford, FL 32771
    Email john@floridaiaq.com
    Phone 407-383-9459